Flashcards in Lab 7 - Age & Growth Deck (4)
What are the two basic ways to estimate age and growth of fish?
1 - Peterson method or length-frequency distribution
2 - Use hard parts to measure age and growth directly
What are some of the issues with the Peterson method.
Assumes fish can be separated into distinct year classes.
Difficult in older fish and fish in the tropics that spawn year-round.
Where can we use hard parts to measure age?
Bones, fin rays, scales, otoliths